package main

import (
	"fmt"
	"os"
	"strings"
)

//os包下的 命令行读取方法 string类型的切片变量 os.Args
func main() {
	who := "Alice"

	if len(os.Args) > 1 {
		who += strings.Join(os.Args[1:], " ")
	}
	fmt.Println("Good Morning", who)

}
